rml on .csv with embedded newlines and embedded quotes

characters.csv

characters.csv.nq

<http://example.org/character/0> <http://dbpedia.org/ontology/hairColor> "bla\nck".
<http://example.org/character/0> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://schema.org/Person>.
<http://example.org/character/0> <http://schema.org/givenName> "Ash".
<http://example.org/character/0> <http://schema.org/lastName> "\"Ketchum\"".
<http://example.org/character/1> <http://dbpedia.org/ontology/hairColor> "orange".
<http://example.org/character/1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://schema.org/Person>.
<http://example.org/character/1> <http://schema.org/givenName> "Misty".
<http://example.org/character/1> <http://schema.org/lastName> "".

rules.rml.ttl

@prefix rml: <http://semweb.mmlab.be/ns/rml#> .
@prefix rr: <http://www.w3.org/ns/r2rml#> .
@prefix ql: <http://semweb.mmlab.be/ns/ql#> .
@prefix csvw: <http://www.w3.org/ns/csvw#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix : <http://example.org/rules/> .
@prefix schema: <http://schema.org/> .
@prefix dbo: <http://dbpedia.org/ontology/> .

:TriplesMap a rr:TriplesMap;
  rml:logicalSource [
    rml:source [
      a csvw:Table;
      csvw:url "characters.csv";
      csvw:dialect [
        a csvw:Dialect;
        csvw:delimiter ","
      ]
    ];
    rml:referenceFormulation ql:CSV
  ].

:TriplesMap rr:subjectMap [
  rr:template "http://example.org/character/{id}"
].

:TriplesMap rr:predicateObjectMap [
  rr:predicate rdf:type;
  rr:objectMap [
   rr:constant schema:Person
 ]
].

:TriplesMap rr:predicateObjectMap [
  rr:predicate schema:givenName;
  rr:objectMap [
    rml:reference "firstname"
  ]
].

:TriplesMap rr:predicateObjectMap [
  rr:predicate schema:lastName;
  rr:objectMap [
    rml:reference "lastname"
  ]
].

:TriplesMap rr:predicateObjectMap [
  rr:predicate dbo:hairColor;
  rr:objectMap [
    rml:reference "hair"
  ]
].